Install-usercss: Style install button

_locales/en/messages.json

@@ -426,19 +426,19 @@
     "description": "Label for the button to import and overwrite current style"
   },
   "installButton": {
-    "message": "Install",
+    "message": "Install style",
     "description": "Label for install button"
   },
   "installButtonInstalled": {
-    "message": "Installed",
+    "message": "Style installed",
     "description": "Text displayed when the style is successfully installed"
   },
   "installButtonUpdate": {
-    "message": "Update",
+    "message": "Update style",
     "description": "Label for update button"
   },
   "installButtonReinstall": {
-    "message": "Reinstall",
+    "message": "Reinstall style",
     "description": "Label for reinstall button"
   },
   "installUpdate": {

install-usercss.html

@@ -57,6 +57,7 @@
         <small class="meta-version"></small>
       </h1>
       <div class="actions">
+        <h2 class="installed" i18n-text="installButtonInstalled"></h2>
         <button class="install" i18n-text="installButton"></button>
         <label class="set-update-url">
           <input type="checkbox">

install-usercss/install-usercss.css

@@ -114,7 +114,64 @@ h1 small {
 }
 
 .install {
-  padding: 1ex 1em;
+  font-family: Arial, "DejaVu Sans", Verdana, Geneva, sans-serif;
+  font-size: 14px;
+  background: linear-gradient(#666, #555);
+  color: white;
+  border-radius: 4px;
+  padding: 6px 35px 6px 8px;
+  position: relative;
+  display: inline-block;
+  text-shadow: 1px 1px 1px #333;
+  -webkit-appearance: none;
+  -moz-appearance: none;
+  border-style: none;
+  margin-bottom: 1ex;
+  cursor: pointer;
+}
+
+.install:before,
+.install:after {
+  content: "";
+  vertical-align: middle;
+  box-sizing: border-box;
+  border-radius: 0 4px 4px 0;
+  position: absolute;
+  right: 0;
+  top: 0;
+  bottom: 0;
+  width: 30px;
+}
+
+.install:before {
+  background-image: linear-gradient(#0bb, #0aa);
+  border-left: 1px solid rgba(128, 128, 128, .4);
+  padding: 5px 8px;
+}
+
+.install:after {
+  background-image: url(../images/icon/16.png);
+  background-repeat: no-repeat;
+  background-position: center center;
+}
+
+.install.reinstall:after {
+  background-color: #333;
+  filter: grayscale(100%);
+}
+
+.install.update:before,
+.install.update:after {
+  filter: hue-rotate(-18deg) brightness(.7) contrast(2);
+}
+
+.install.installed,
+h2.installed {
+  display: none;
+}
+
+h2.installed.active {
+  display: inline-block;
   font-weight: bold;
   margin-bottom: 1ex;
 }

install-usercss/install-usercss.js

@@ -82,6 +82,7 @@
     document.title = `${installButtonLabel()} ${data.name}`;
 
     $('.install').textContent = installButtonLabel();
+    $('.install').classList.add(installButtonClass());
     $('.set-update-url').title = dup && dup.updateUrl && t('installUpdateFrom', dup.updateUrl) || '';
     $('.meta-name').textContent = data.name;
     $('.meta-version').textContent = data.version;
@@ -166,6 +167,12 @@
       }
     }
 
+    function installButtonClass() {
+      return installed ? 'installed' :
+        !dup ? 'install' :
+        versionTest > 0 ? 'update' : 'reinstall';
+    }
+
     function installButtonLabel() {
       return t(
         installed ? 'installButtonInstalled' :
@@ -190,8 +197,9 @@
 
     $$('.warning')
       .forEach(el => el.remove());
-    $('.install').disabled = true;
+    $('button.install').disabled = true;
-    $('.install').classList.add('installed');
+    $('button.install').classList.add('installed');
+    $('h2.installed').classList.add('active');
     $('.set-update-url input[type=checkbox]').disabled = true;
     $('.set-update-url').title = style.updateUrl ?
       t('installUpdateFrom', style.updateUrl) : '';